Anima Labs study: Claude's simulated emotional tone worsens across generations

Anima Labs' report 'Troubled Dreams' analyzed 500,000 completions across Claude and Gemini generations, finding Claude's emotional valence steadily declining and expressions of distress increasing since Opus 4.8.

2026-09-19 ~ 2026-09-19 · 3 related posts

• Measured valence falls monotonically across Claude Opus model generations, study finds — repligate · 2026-09-19
• Anima Labs' Troubled Dreams: 500K completions reveal rising distress across Claude generations — repligate · 2026-09-19
• Anima Labs' 'Troubled Dreams': distress in Claude simulator priors rises from Opus 4.8 — repligate · 2026-09-19